d.Classroom instruction is more effective than online instruction for teaching declarative knowledge.
Step-by-step explanation:
Though online instruction have been proved as a reliable source of learning, there are some learning processes which may have better results if taught in the classrooms.
One such case is imparting declarative knowledge. Declarative Knowledge is essentially descriptive and conceptual information which describes a certain topic in a detailed manner.
It requires a lot of time and effort to impart declarative knowledge. Therefore, classroom instruction proves more effective than online instruction while imparting declarative knowledge.